CPC H01M 4/5825 (2013.01) [C01B 25/45 (2013.01); H01M 4/366 (2013.01); H01M 4/587 (2013.01); C01P 2002/50 (2013.01); C01P 2002/74 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2004/64 (2013.01); C01P 2004/80 (2013.01); C01P 2006/12 (2013.01); C01P 2006/14 (2013.01); C01P 2006/16 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01)] | 12 Claims |
1. A positive electrode active material for a lithium ion secondary battery, which comprises a granulated body of positive electrode active material particles for a lithium ion secondary battery, wherein an average particle diameter of primary particles is 10 nm or more and 80 nm or less, and a number ratio of particles having a particle diameter of 100 nm or more is 1.2% or higher and 5.0% or less.
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